Question

From a water fall , water is pouring down at the rate of 100 kg per sec on the blade of a turbine . If the height of the fall be 100 m, the power delivered to the turbine is approximately equal to :

• A. 100 kw
• B. 1 w
• C. 1 kw
• D. 100 w

Answer 1

The correct option is A 100 kw

Given,

Rate of water fall,$\dot{m}=100kg/s$

Height of fall, $h=100m$

Power deliver, $P=\dot{m}gh=100\times 10\times 100=100kW$

Hence, the power delivered to the turbine is $100kW$